1. 鋼材の定着
ブイ、船舶の停泊、検疫停泊地、航行禁止区域、軍事演習区域など。
2. 海洋作業領域、海洋データ探査、水路測量、比重測定、潜水、サルベージ、海洋土木建設作業（掘削）、海洋開発、泥捨て場、流速測定場、コンパス校正場、水中構造物、ケーブル、パイプライン、水道入口、水出口など。
3. Traffic separation, separation strip, etc. can be used when conventional navigation aids are used to mark traffic separation that may cause confusion;
4. レクリエーションエリア、スポーツトレーニングエリア、海洋レクリエーションエリア、海岸海水浴場など。
5. 水中操業区域、水中定置網操業区域及び養殖場。
Buoys have different types and specifications, which can be divided into inland river buoys and marine buoys according to the water area deployed. Inland river buoys include drum buoys, triangular buoys, bar buoys, cross flow buoys, left and right navigation buoys, etc. The shape, color, top mark and light quality of the buoy shall be installed and manufactured according to the specified standards, which have specific meanings. The basic shapes of buoy bodies at sea include tank, cone, sphere, column, rod, etc. Due to the influence of wind, wave and tide, the target body has a certain floating range and cannot be used as a sign to determine the ship's position.
ブイの機能は、航行の安全を脅かす水路の浅瀬や障害物をマークすることです。ランプを備えたブイはライトブイと呼ばれ、ソーラービーコンライト、GPS同期点滅、リモコンおよび遠隔測定ビーコンライトシステムを装備することができ、昼夜を問わず航行可能な海域での航行支援に使用されます。一部のブイには、レーダートランスポンダーやその他の補助装置が装備されている場合もあります。
Buoys and light buoys are floating beacons, which are reserved at the design position with anchorage equipment, have a certain radius of gyration, and their own positions are not fixed, so they can only be used to aid navigation. The commonly used buoys are generally made of ultra-high molecular weight polyethylene, steel plate and glass fiber reinforced plastic. One end is tied to the bottom, and it floats on the water itself to indicate the limits of the channel, obstacles and dangerous areas.
